Guard foe



Jan. 29 1924.

W. HINCHLIFFE GUARD FOR DRAWING FRAMES Filed June 20. 1923 lnvenTor. WiHiom Hinchliffe Patented Jan. 29, 1924.

UNITED srarss WILLIAM HINCHLIFFE, or HUNTSVILLE, ALABAMA.

GUARD FOR DEAVJING FRAMES.

Application filed June 20, 1923. Serial No. 646,668.

To all whom it may concern:

Be it known that I, WILLIAM HrNoHLrrrn,

a citizen of the United States. and resident.

of Huntsville, county of Madison, Stateof Alabama. have invented an Improvement in Guards for Drawing Frames, of which the following description, in connection with the accompanying drawing, is a specification. like characters on the drawing representing like parts.

This invention relates to a guardfor a drawing frame of the type having a plurality of rolls operating on a cotton sliver and a cleaner to remove from the rolls any fibres of cotton which may adhere thereto.

In a drawing frame of the above mentioned type the cleaner is made of a material to which the cotton sticks in preference to sticking to the rolls so that as the rolls rub against the cleaner the cotton sticks thereto and is removed from the rolls. The cotton clings quite tenaciously tothe cleaner and therefore if the sliver comes in contact with the cleaner due either to the sliver breaking and whipping up against the cleaner or to the carelessness of the operator of the machine part of the "cotton is drawn from the sliver with the result that a thin place is left in the sliver which shows up in the later process of manufacture as a thin place in the yarn. The sliver may thus come into contact with the cleaner through an opening which is usually present between the drawing roll and the frame.

It is the object of the present invention to provide a guard for the drawing frame to close the opening between the drawing rolls and the frame at a point beneath the cleaner to prevent the sliver from coming in contact with the cleaner.

Other objects and features of the invention will more fully appear from the following description and the accompanying drawings and will be particularly pointed out in the claims.

The drawings illustrate both in section and elevation a preferred form of construction adapted for use in a guard for a drawing frame and embody the broad principles of the invention.

In the drawings Fig. 1 is a section through a drawing frame with the invention applied;

Fig. 2 i a perspective of the guard.

Fig. 3 is a section through the top of a drawing frame with the guard formed integrally with the top.

As illustrated herein the guard which forms the subject matter of the present invention is shown in a preferred form at 1 applied to a drawing frame 2 of the usual construction having a plurality of pairs 4t. 5' and 6 of upper and lower drawing rolls situated behind. one another on the frame. The frame has removable top 7 and a holder 8 which holds the cleaner 9 in contact with the upper roll of each pair of drawing rolls. The cotton sliver 10 moves in the direction of the arrow and enter the machine over a guide. 11, passes between the pairs of drawing rolls and then leaves the machine through guide or trumpet 12. Rolls 13 draw the sliver which has been operated upon from the machine as fast it is fed from the end rolls 6. The cleaner 9 is usu" ally made of av material such as wool to which the cotton stick and contacts with the upper roll of each pair of drawing rolls as shown in the drawings so that as the rolls rotate the teeth rub against the cleaner and the cotton sticks to the cleaner leavin the teeth clean as they come around to operate further on the sliver.

In the usual type of drawing fram the top of the frame is spaced from the leading in drawingroll which is the upper roll of the first pair of rolls 3 and the cotton sliver, if lb happens to break or if it is fed to the leading in roll too fast. whips up through the opening and comes into contact with the cleaner with the result that some of the cotton in the sliver sticks to the cleaner and a thin place is left in the sliver. In order to prevent the sliver from coming into contact with. the cleaner when it whips around, the guard which forms the subject matter of the present invention is provided.

The guard as shown in 1 and 2 is made for attachment to the top 7 of dra-w ing frames which are now in use and are not provided with means to prevent the sliver from coming into contact with the cleaner. The guard is shown as a fiat metal plate bent into angular form and attached to the frame and extends toward the rolls with its edge 14 closely adjacent the leading in'roll beneath the cleaner to close the opening between the roll and the frame thereby to prevent the sliver form coming into contact with the cleaner. The guard may be attached to the frame in any manner but it IS preferred to bend one edge 15 of the guard at an angle to the remainder of the guard and provide the edge 15 with openings 16 through which bolts 17 may pass to fasten the guard to the top of the frame. It is obvious that the edge 15 must be bent at such an angle that when it is fastened to the frame the free edge of the guard extends adjacent the drawing rolls beneath the cleaner and closes the opening between the drawing rolls and the frame so that the sliver will not come into contact with the clean'r.

The guard shown in Fig. 3 is made integrally with the top 7 of the frame and this form is intended to be supplied with new drawing frames as apart of the top.

In the operation of the machine the sliver traverses back and forth across the rolls in order that groove may not be worn in the rolls at on. spot and thus the sliver and rolls contact over quite an appreciable area. The guard, therefore, must be long enough to extent, well over the area of contact of the rolls of the sliver so that should the sliver break when it is in any of its various posiinvention be construed as broadly as the limita tions in the claims, taken in conjunction with the .prlor art, may allow.

Having thus described the invention what is. claimed as new and desired to be secured by Letters Patent is:

1. A guard for a drawing frame having drawing rolls for operating on a cotton sliver and a cleaner for the rolls, the said guard being joined to the frame and extend ing toward the rolls with its edge closely adjacent the leading in roll b neath the cleaner to close the opening between the roll and the frame thereby to prevent the sliver from coming in contact with the cleaner.

2. The combination with a drawing frame having drawing rolls for operating on a cotton sliver and a cleaner for the rolls, of a guard joined to the frame and having its free edge extending adjacent th drawing rolls beneath the cleaner and closing the opening between the drawing rolls and the frame thereby to prevent the sliver from coming in contact with the cleaner.

3. The combination with a drawing frame havinga plurality of pairs of upper and lower drawing rolls situated behind one another for operating on a cotton sliver running b"- tween the upper and lower roll of each pair and a cleaner for the rolls contacting with the upperroll of each pair, of a guard fastened to the frame and having its free edge extending adjacent the upper drawing roll of the first pair beneath the cleaner with its edge extending well over the area of contact of the rolls and the sliver, to close the o )ening between said first upper drawing rol and the frame to prevent the sliver from coming in contact with the cleaner.

In testimony whereof, I have signed my name to this specification. v

WILLIAM HINC'HLIFFE. 

